Mine 4.75 yo has never needed much sleep (much to my disdain).
He gets about 8ish hours maybe and functions very well. We used to go to bed at 8, but he never fell asleep until really close to 10.
I gave up the battle and now we just go to bed around 9:30ish. Much less battle at night and he gets up at 6 just fine.
ETA: he only slight naps at daycare cause it's required, but no naps on wknds
It's a blessing during the week when gotta get up and go, but the...